Rain
It turns out that Kyosuke asking Kei out was a ploy on his part as a lead in to ask her if she wanted to star in an amateur film he is making for an upcoming film festival. Hirono and Kyosuke get into an argument over the differences between being a professional and an amateur, ending with Kei interjecting, saying she has not decided if she will choose to be cast in Kyosuke's film or not. Later, Kei informs Miyako in an intense discussion that Miyako will eventually disappear from Hirono's heart (she actually says "I will erase you from his memories"). On Sunday, Kei gets hurt at the basketball match and Hirono stands up Miyako on a date they were supposed to go on to make sure Kei is all right. Meanwhile, Chihiro continues to write her novel and Renji helps her by borrowing a uniform from Shuichi so that they can enter the school's library to research materials for the novel.
Aired 11/11/2007EP 6 - Rain
ef ~ A Tale of Memories
On Christmas Eve, Hiro Hirono's bike is stolen by a girl chasing a thief who stole her purse. He gives chase and finds her unconscious and his bike ruined. The girl, Miyako Miyamura, soon awakes and the two begin to talk. After making sure she is okay, they end up spending Christmas Eve together. Later, Hiro finds out Miyako attends the same school as him and they begin to spend more and more time together, Miyako developing affections for Hiro. Kei Shindou -- Hiro's childhood friend who has long held a crush on him -- begins to become jealous and a love triangle follows.
The series also tells the story of Renji Asou. One day, he meets Chihiro Shindou, the twin sister of Kei Shindou, at an abandoned train station. Even though she's very shy, they get along pretty well and begin meeting at the same spot everyday. However, Renji finds out that Chihiro was in a car accident years ago and as a consequence she suffers from a disability: her memory lasts only 13 hours. Nevertheless, after learning that Chihiro's dream is to write a novel, Renji finally decides to help her fulfill her dream while also trying to make her overcome the difficulties imposed by her condition.